I purchased a trailer which also ended up having water damage from a cracked drain pipe under the shower. The dealer repaired it to my satisfaction but at the end of the camping season I couldn’t live with the thought of potential mould behind the walls so I traded it in. I negotiated with the dealer to purchase a more expensive unit with a very good trade-in value on the previously damaged unit. My PDI was much more extensive on the new unit and I refused to take deliver 5x until everything was to my satisfaction. We’ve had our new trailer for the last two years and love it. Good luck.